Kernel-4.18.0-80.el8_pci-endpoint-test

Driver for PCI Endpoint Test Function

This driver should be used as a host side driver if the root complex is
connected to a configurable PCI endpoint running pci_epf_test function
driver configured according to [1].

The “pci_endpoint_test” driver can be used to perform the following tests.

The PCI driver for the test device performs the following tests
*) verifying addresses programmed in BAR
*) raise legacy IRQ
*) raise MSI IRQ
*) read data
*) write data
*) copy data

This misc driver creates /dev/pci-endpoint-test. for every
pci_epf_test function connected to the root complex and “ioctls”
should be used to perform the above tests.

ioctl

PCITEST_BAR: Tests the BAR. The number of the BAR to be tested
should be passed as argument.
PCITEST_LEGACY_IRQ: Tests legacy IRQ
PCITEST_MSI: Tests message signalled interrupts. The MSI number
to be tested should be passed as argument.
PCITEST_WRITE: Perform write tests. The size of the buffer should be passed
as argument.
PCITEST_READ: Perform read tests. The size of the buffer should be passed
as argument.
PCITEST_COPY: Perform read tests. The size of the buffer should be passed
as argument.

[1] -> Documentation/PCI/endpoint/function/binding/pci-test.txt